Dossier
Patient Health Questionnaire-9
Coverage of Patient Health Questionnaire-9 in the Nexus archive.
- A Guide to Clinical Depression: Signs and Symptoms and Treatments for Major Depressive Disorder
Approximately 332 million people worldwide have depression, which is 1.5 times more common in women than men. Clinical depression, or major depressive disorder, is diagnosed when at least five of nine symptoms persist for two weeks, significantly impairing daily life.